package com.onlineclass.controller;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.alipay.config.AlipayConfig;
import com.mvc.annotation.Controller;
import com.mvc.annotation.RequestMapping;
import com.mvc.core.ModelAndView;
import com.onlineclass.bean.User;
import com.onlineclass.dao.CartDAO;
import com.onlineclass.dao.OrderDAO;


@Controller
@RequestMapping("/my")
public class MyController {

	CartDAO cartDAO = new CartDAO();
	OrderDAO orderDAO = new OrderDAO();
	
	/**
	 * 加到购物车
	 * @param courseId
	 * @param userId
	 * @return
	 */
	@RequestMapping("/addCart.do")
	public Map<String, Object> addCart(Integer courseId, Integer userId) {
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("nums", cartDAO.save(courseId, userId));//   {"nums":0}
		return map;
	}
	
	/**
	 * 显示购物车
	 * @param courseId
	 * @param userId
	 * @return
	 */
	@RequestMapping("/cart.do")
	public ModelAndView cart(HttpServletRequest request) {
		ModelAndView model = new ModelAndView("/my/cart.jsp");
		Map<String, Object> map = new HashMap<String, Object>();
		Integer userId = ((User)request.getSession().getAttribute("user")).getId();
		map.put("carts", cartDAO.list(userId));
		model.setMap(map);
		return model;
	}
	
	/**
	 * 下单
	 * @param courseId
	 * @param actualPrice
	 * @param request
	 * @return
	 */
	@RequestMapping("/createOrder.do")
	public ModelAndView createOrder(String[] courseId, String actualPrice, String subject, HttpServletRequest request) {
		ModelAndView model = new ModelAndView("");
		Integer userId = ((User)request.getSession().getAttribute("user")).getId();
		
		long timeStamp = System.currentTimeMillis();
		long nums = (long)Math.random()*100000;
		String orderNo = timeStamp+""+nums;//订单号的生成规则：时间戳
		orderDAO.save(courseId, actualPrice, userId, orderNo);
		
		model.setUrl("redirect:/my/order_pay.jsp?orderNo="+orderNo+"&actualPrice="+actualPrice+"&subject="+subject);
		return model;
	}
	
	/**
	 * 购买的课程
	 * @param request
	 * @return
	 */
	@RequestMapping("/orderList.do")
	public ModelAndView orderList(HttpServletRequest request) {
		ModelAndView model = new ModelAndView("/my/order_list.jsp");
		Map<String, Object> map = new HashMap<String, Object>();
		Integer userId = ((User)request.getSession().getAttribute("user")).getId();
		map.put("orders", orderDAO.list(userId));
		model.setMap(map);
		return model;
	}
	
	/**
	 * 付款
	 * @param request
	 * @return
	 */
	@RequestMapping("/pay.do")
	public void pay(HttpServletRequest request, HttpServletResponse response) {
		//获得初始化的AlipayClient
		AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key, AlipayConfig.sign_type);
		
		//设置请求参数
		AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
		alipayRequest.setReturnUrl(AlipayConfig.return_url);
		alipayRequest.setNotifyUrl(AlipayConfig.notify_url);
		
		try {
			//商户订单号，商户网站订单系统中唯一订单号，必填
			String out_trade_no = new String(request.getParameter("WIDout_trade_no").getBytes("ISO-8859-1"),"UTF-8");
			//付款金额，必填
			String total_amount = new String(request.getParameter("WIDtotal_amount").getBytes("ISO-8859-1"),"UTF-8");
			//订单名称，必填
			String subject = new String(request.getParameter("WIDsubject").getBytes("ISO-8859-1"),"UTF-8");
			//商品描述，可空
			String body = new String(request.getParameter("WIDbody").getBytes("ISO-8859-1"),"UTF-8");
			
			alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\"," 
					+ "\"total_amount\":\""+ total_amount +"\"," 
					+ "\"subject\":\""+ subject +"\"," 
					+ "\"body\":\""+ body +"\"," 
					+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
			
			//若想给BizContent增加其他可选请求参数，以增加自定义超时时间参数timeout_express来举例说明
			//alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\"," 
			//		+ "\"total_amount\":\""+ total_amount +"\"," 
			//		+ "\"subject\":\""+ subject +"\"," 
			//		+ "\"body\":\""+ body +"\"," 
			//		+ "\"timeout_express\":\"10m\"," 
			//		+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
			//请求参数可查阅【电脑网站支付的API文档-alipay.trade.page.pay-请求参数】章节
			
			//请求
			String result = alipayClient.pageExecute(alipayRequest).getBody();
			//输出
			response.getWriter().println(result);
		} catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}
	
	}


}